The world has changed considerably since Charles Darwin was born, 200 years ago. So Jere Lipps, curator at UCMP and professor emeritus of Integrative Biology at Berkeley, wrote a letter to Darwin, filling him in on how things have changed. Jere has been to many of the places that Darwin visited on his voyage on the Beagle, and most of the places Jere visited bear almost no resemblance to what Darwin saw in 1832. Rapid population growth has left its mark. Darwin was no stranger to population growth — it is central to his theory of natural selection — but he probably could not have anticipated the world that Jere describes in his letter. Read Jere's letter to Darwin on the Palaeontologia Electronica website here.